Drying-oven.



No. 768,203. I I PATENTED AUG. 23, .1904.

M. M. SUPPES & 0. PHELPS.

DRYING OVEN.

APPLICATION FILED DEG-5. 1903.

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PATENTE'D AUG. 23, 1904. M. M. SUPPES & 0. PHELPS DRYING OVEN.

APPLICATION FILED DEC. 5, 1903.

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MAXIMILIAN M. SUPPES A\ D OLIVER PHELPS, OF ELYRIA, OHIO.

DRYING-OVEN.

SPECIFICATION forming part of Letters Patent N 0. 768,203, dated August23,1904. Application filed December 5, 1903. Serial No. 183,957. (Nomodel.)

To all whom it may concern.-

Be it known that we, MAXIMILIAN M. SUITES and OLIVER PHELPS, of Elyria,in the county of Lorain and State of Ohio, have invented a new anduseful Improvement in Drying- Ovens, of which the following is a full,clear, and exact description, reference being had to the accompanyingdrawings, which form a part of this specification.

ur invention has relation to certain new and useful improvements indrying-ovens, and while it has been more particularly designed for thepurpose of providing means for drying cores and molds in foundries it isalso adapted for drying or baking various other articles and objects,such as clay and pottery ware, wood, lumber, &c. It has been customaryheretofore to construct ovens of this char-.

acter of brick or to build them in pits, and it has been a verydifficult matter to close or seal them sufficiently tight, especiallyaround the doors, to prevent the escape of dust and smoke into thefoundry or drying-room. These ovens have also necessarily occupied aconsiderable amount of space, and there is a large loss of heat byradiation.

Our object has been to provide an oven constructed in such a manner asto make doors and other openings entirely unnecessary and which can beeifectually sealed to prevent the escape of smoke and dust, also toprovide an oven which is compact, which can be readily charged anddischarged, and in which the loss of heat by radiation is reduced to aminimum.

A further object of the invention is to'provide means whereby ourimproved ovens may be conveniently operated in groups or batteries'. 1

With these objects in view our invention consists in an oven comprisinga suitable base or bed upon which are placed the objects to be dried orbaked and a bodily-removable body portion in the form of a hollow shellopen only at its lower end, together with means for sealing the jointbetween said shell and the bed or base and means for effecting acirculation of a heating medium within said shell.

Our 'invention -also consists in a certain novel arrangement of ovens ofthis character in groups or batteries in combination with means fortheir convenient 1 and economical operation.

Our invention also consists in the novel con: struction, combination,and arrangement of parts, all substantially as hereinafterdescribed,

and pointed out in the appended claims, reference being had to theaccompanying drawings, in which- Figure 1 is a view of one of our ovens,shown partly in side elevation and partly in vertical section; Fig. 2, aplan view showing a group or battery of the ovens, and Fig. 3 asectional elevation of the same.

The letter A designates a suitable base or foundation which forms asupport for a sealing-trough B and a perforated base-plate C, upon whichare placed thecores or molds X to be dried or baked.

D designates the body portion of the oven, which is formed from sheetmetal and is entirely closed except at its bottom. It is preferablyformed of two thicknesses of metal, as shown in Fig. 1, with aninterposed filling d, of asbestos, mineral wool, cinder, or otherrefractory non-conducting material. It is seated in the sealing-trough Bin a body 6 of sand, which forms an effective seal to prevent the escapeof gases, dust, and smoke.

Below the perforated base-plate O is a chamber D, connected by a fineEwith a suitable furnace or heater.

F represents return-pipes, which extend out into a stack-flue G.

H designates dampers for regulating the circulation through the oven.

The ovens are preferably arranged in groups.

or batteries, as shown in Figs 2 and 3, upon each side of a track I,upon which cars for bringing the green cores or molds to the ovens andfor carrying away the dried cores may be run. The ovens are suppliedwith heat by a series of flues E, leading from a heater or furnace E,the several return-fines G leading to a stack G.. pers H. I

K, Fig. 3, is a traveling crane which spans the groups of ovens andcarries a hoist L. The chains of this hoist may be engaged with Eachoven is provided with dam- 7 hooks or lugs cl on the oven-bodies D, andsaid bodies may be lifted bodily off from and onto the bases. \Vhile anoven is being charged or discharged its body D may be placed upon anadjacent oven, as shown in Fig. 3, thereby economizing floor-space.

The bodies or shells D are preferable cylindrical in form in order toavoid corners into which the heat would not penetrate equally with themore central portions. The tops of the shells are preferably rounded ordomeshaped, so that the heat entering the oven and rising to the topwill be deflected downwardly again throughout the oven. By extending thereturn-pipes F somewhat above the floor of the oven a directreturn-passage for the heat circulation is prevented. In drying hollowcores, such as shown in Fig. 1, these may be placed so as to formnatural flues through which will pass the hot air and gases from thefurnace.

We do not wish to be limited to the particular means for obtaining acirculation through the ovens which we have herein shown and described,as this may be accomplished in various ways known to the art.

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent, is

1. A drying-oven, comprisinga suitable bed or base, and a removableportable body or shell arranged to be seated upon said bed or base andforming the top and lateral walls of the oven, said body or shell beingclosed except at its bottom, and means for effecting the circulation ofa heated medium therethrough.

2. The herein-described drying-oven, comprising a suitable bed or base,and a removable body portion or shell arranged to be seated upon saidbed or base and forming the top and lateral walls of the oven, saidportion or shell being closed except at its bottom, and means forseating the joint between the bottom edge of the shell and the base,together with means for effecting the circulation of a heated mediumtherethrough.

3. A drying-oven composed of a suitable bed or base upon which areplaced the objects to be dried, and a portable sheet-metal shell formingthe walls of the oven and seating upon said base, said shell beingclosed except at the bottom, and a sand seal for the bottom of saidshell, together with means for effecting the circulation of aheatedmedium there through.

' a. A drying-oven, composed of abase-plate or floor, and a removablesheet-metal body or shell forming the walls of the oven and entirelyclosed except at its lower end, and means for effecting a circulation ofa heated medium through the said body or shell.

5. The herein-describeddrying-oven, consisting of a suitable base orfloor, and a movable body or shell, closed except at its lower end,forming the top and lateral walls of the oven, and formed of twothicknesses of sheet metal, with an interposed lilling of non-eonductingmaterial, together with means for effecting the circulation of a heatedmedium therethrough.

6. The herein-described drying-oven, consisting of a suitable floor orbase, and a movable cylindric body or shell, closed except at it bottom,and having a rounded, or domeshaped top, together with means foreilecting the circulation of a heated medium therethrough.

7. The herein-described oven, consisting of asuitable floor or base, asealing-trough thereon containing a body of sealing material, and amovable sheet-metal body or shell, forming the lateral and top 'alls ofthe oven, said shell being closed except at its bottom, and arranged toseat in said sealing material, together with means for effecting thecirculation of a heated medium therethrough.

8. A drying-oven consisting 01. a per lorated base arranged to supportthe objects to be dried, a heating'fiue communicating with the underside of said base, a movable sheet-metal body or shell forming the topand lateral walls of the oven, and return-fines communicating with theinterior of said body or shell.

9. A series of drying-ovens, having their top and lateral walls formedby movable bodies or shells, a traveling crane spanning the series ofovens, and a hoist carried by the said crane for lifting said bodies orshells, together with means for effecting the circulation of a heatedmedium therethrough.

10. The combination with a series of d rying-ovens, whose body portionsare formed by movable sheet-metal shells, and means for effecting acirculation of a heated medium therethrough, of a traveling cranespanning the said ovens, a hoist carried thereby, means whereby thehoist may be engaged with any one of said shells, and means forsupporting one shell upon another.

11. The herein-described drying-oven, comprising a suitably-fixed flooror base, having openings therein, and a movable sheet-metal body orshell forming the lateral and top walls of the oven, together with meansfor effecting a circulation of a heated medium within the oven by meansof the said openings.

In testimony whereof we have aiiixed our signatures in presence of twowitnesses.

MAXIMIL'IAN M. SUPPES. 0L1 VER PI I'ELPS.

\Vitnesses:

l). \V. LAWRENCE, Rosa NoL'roN.

